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EP2779550A3 - Digital equalizer adaptation using on-die instrument - Google Patents

Digital equalizer adaptation using on-die instrument Download PDF

Info

Publication number
EP2779550A3
EP2779550A3 EP14158107.4A EP14158107A EP2779550A3 EP 2779550 A3 EP2779550 A3 EP 2779550A3 EP 14158107 A EP14158107 A EP 14158107A EP 2779550 A3 EP2779550 A3 EP 2779550A3
Authority
EP
European Patent Office
Prior art keywords
receiver
output
gain
operable
eye opening
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP14158107.4A
Other languages
German (de)
French (fr)
Other versions
EP2779550B1 (en
EP2779550A2 (en
Inventor
Tim Tri Hoang
Nam V. Nguyen
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Altera Corp
Original Assignee
Altera Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Altera Corp filed Critical Altera Corp
Publication of EP2779550A2 publication Critical patent/EP2779550A2/en
Publication of EP2779550A3 publication Critical patent/EP2779550A3/en
Application granted granted Critical
Publication of EP2779550B1 publication Critical patent/EP2779550B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/03—Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
    • H04L25/03878—Line equalisers; line build-out devices
    • H04L25/03885—Line equalisers; line build-out devices adaptive
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G3/00—Gain control in amplifiers or frequency changers
    • H03G3/002—Control of digital or coded signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/06—Receivers
    • H04B1/16—Circuits
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B3/00—Line transmission systems
    • H04B3/02—Details
    • H04B3/04—Control of transmission; Equalising
    • H04B3/14—Control of transmission; Equalising characterised by the equalising network used
    • H04B3/143—Control of transmission; Equalising characterised by the equalising network used using amplitude-frequency equalisers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/03—Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/03—Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
    • H04L25/03006—Arrangements for removing intersymbol interference
    • H04L25/03012—Arrangements for removing intersymbol interference operating in the time domain
    • H04L25/03019—Arrangements for removing intersymbol interference operating in the time domain adaptive, i.e. capable of adjustment during data reception
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/03—Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
    • H04L25/03006—Arrangements for removing intersymbol interference
    • H04L25/03012—Arrangements for removing intersymbol interference operating in the time domain
    • H04L25/03019—Arrangements for removing intersymbol interference operating in the time domain adaptive, i.e. capable of adjustment during data reception
    • H04L25/03057—Arrangements for removing intersymbol interference operating in the time domain adaptive, i.e. capable of adjustment during data reception with a recursive structure
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0058—Allocation criteria
    • H04L5/006—Quality of the received signal, e.g. BER, SNR, water filling

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Power Engineering (AREA)
  • Dc Digital Transmission (AREA)
  • Circuits Of Receivers In General (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)

Abstract

Systems and methods are provided for adjusting gain of a receiver. Adaptation circuitry is operable to identify, based on a matrix representation of a receiver's output generated from horizontal and vertical sweeps of the receiver's output, an eye opening of the receiver's output. The adaptation circuitry is also operable to determine whether a size of the eye opening needs to be changed. When it is determined that the size of the eye opening needs to be changed, the adaptation circuitry is operable to generate a digital signal to change a gain setting of the receiver. When the signal at the receiver's output is under-equalized, the AC gain of the receiver is increased. When the signal at the receiver's output is over-equalized, the AC gain of the receiver is decreased.
EP14158107.4A 2013-03-14 2014-03-06 Digital equalizer adaptation using on-die instrument Active EP2779550B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US201361782855P 2013-03-14 2013-03-14
US13/974,297 US9001943B2 (en) 2013-03-14 2013-08-23 Digital equalizer adaptation using on-die instrument

Publications (3)

Publication Number Publication Date
EP2779550A2 EP2779550A2 (en) 2014-09-17
EP2779550A3 true EP2779550A3 (en) 2014-11-12
EP2779550B1 EP2779550B1 (en) 2018-08-15

Family

ID=50231013

Family Applications (1)

Application Number Title Priority Date Filing Date
EP14158107.4A Active EP2779550B1 (en) 2013-03-14 2014-03-06 Digital equalizer adaptation using on-die instrument

Country Status (3)

Country Link
US (4) US9001943B2 (en)
EP (1) EP2779550B1 (en)
CN (1) CN104052694B (en)

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US10063397B1 (en) * 2010-12-22 2018-08-28 Integrated Device Technology, Inc. Method and apparatus for novel adaptive equalization technique for serializer/deserializer links
US9130792B2 (en) * 2013-06-10 2015-09-08 Texas Instruments Incorporated Closed-loop high-speed channel equalizer adaptation
US9160576B1 (en) * 2014-04-08 2015-10-13 Arris Enterprises, Inc. Conditional use of feedback equalization
US9166846B1 (en) * 2014-09-26 2015-10-20 Phytrex Technology Corporation Eye diagram construction display apparatus
TWI580215B (en) * 2015-07-31 2017-04-21 群聯電子股份有限公司 Signal modulation method, adaptive equalizer and memory storage device
US9674062B1 (en) 2015-12-17 2017-06-06 International Business Machines Corporation Memory array to generate a data eye diagram
US9749162B1 (en) 2016-03-29 2017-08-29 Avago Technologies General Ip (Singapore) Pte. Ltd. Receiver bandwidth adaptation
US10209276B2 (en) * 2016-08-15 2019-02-19 Tektronix, Inc. Jitter and eye contour at BER measurements after DFE
US9882707B1 (en) * 2017-03-24 2018-01-30 Xilinx, Inc. System and method for characterizing a receiver of a communication signal
US10177945B1 (en) * 2017-07-26 2019-01-08 Apple Inc. Joint adaptation of high and low frequency gains of a linear equalizer
US20190095308A1 (en) * 2017-09-26 2019-03-28 Intel Corporation Registering clock driver controlled decision feedback equalizer training process
KR102291598B1 (en) * 2017-12-07 2021-08-23 칸도우 랩스 에스에이 Judgment Feedback Equalization Correction of Eye Scope Measurements
US10298422B1 (en) * 2018-01-04 2019-05-21 Nvidia Corporation Multi-path peaking technique for equalization and supply noise compensation
US10469292B1 (en) * 2018-06-29 2019-11-05 Keysight Technologies, Inc. Apparatus and method for characterizing amplifiers in decision feedback equalizers
US10720910B1 (en) * 2019-05-30 2020-07-21 Asmedia Technology Inc. Eye diagram observation device
US11411781B2 (en) 2020-07-24 2022-08-09 Lg Electronics Inc. Signal receiving apparatus and signal processing method thereof
CN112019225B (en) * 2020-08-27 2022-07-05 群联电子股份有限公司 Signal receiving circuit, memory storage device and method for calibrating equalizer circuit
CN112462121B (en) * 2020-10-13 2022-04-15 中国科学院微电子研究所 Eye pattern wave filter system and eye pattern testing method
CN112436852B (en) * 2020-12-07 2022-04-26 海光信息技术股份有限公司 Method and device for searching parameters of analog front-end circuit of receiver
CN112713906B (en) * 2020-12-22 2022-07-22 北京奕斯伟计算技术有限公司 Noise filtering circuit and noise filtering method
US11153135B1 (en) * 2021-01-11 2021-10-19 Texas Instruments Incorporated Methods and systems for adaptive equalization with wide range of signal amplitudes
US11637587B2 (en) 2021-07-29 2023-04-25 Dell Products L.P. In situ common-mode noise measurement in high-speed data communication interfaces

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US20050047500A1 (en) * 2003-09-02 2005-03-03 Gupta Atul K. Precision adaptive equalizer
US20080247452A1 (en) * 2007-04-09 2008-10-09 Synerchip Co., Ltd. Adaptive equalizer for use with clock and data recovery circuit of serial communication link
US20100086017A1 (en) * 2008-10-02 2010-04-08 Altera Corporation Automatic calibration in high-speed serial interface receiver circuitry
US20100128828A1 (en) * 2008-11-25 2010-05-27 Mobin Mohammad S Methods and apparatus for adapting one or more equalization parameters by reducing group delay spread
US20100290515A1 (en) * 2009-05-18 2010-11-18 Xingdong Dai Multi-Band Gain Adaptation for Receiver Equalization Using Approximate Frequency Separation
US20110187400A1 (en) * 2008-04-14 2011-08-04 Advantest Corporation Semiconductor test apparatus and test method
US20110311009A1 (en) * 2010-06-21 2011-12-22 Synopsys, Inc. Pattern agnostic on-die scope

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US3534273A (en) * 1967-12-18 1970-10-13 Bell Telephone Labor Inc Automatic threshold level selection and eye tracking in digital transmission systems
US6901108B2 (en) * 2001-05-04 2005-05-31 Lucent Technologies Inc. Apparatus and method for adaptive control
JP3856101B2 (en) * 2001-09-03 2006-12-13 日本電気株式会社 Optical receiver having reception waveform shaping function
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US8149907B2 (en) * 2009-01-07 2012-04-03 Mediatek Inc. Adaptive equalization apparatus with equalization parameter setting adaptively adjusted according to edges of equalizer output monitored in real-time manner and related method thereof
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Patent Citations (7)

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US20050047500A1 (en) * 2003-09-02 2005-03-03 Gupta Atul K. Precision adaptive equalizer
US20080247452A1 (en) * 2007-04-09 2008-10-09 Synerchip Co., Ltd. Adaptive equalizer for use with clock and data recovery circuit of serial communication link
US20110187400A1 (en) * 2008-04-14 2011-08-04 Advantest Corporation Semiconductor test apparatus and test method
US20100086017A1 (en) * 2008-10-02 2010-04-08 Altera Corporation Automatic calibration in high-speed serial interface receiver circuitry
US20100128828A1 (en) * 2008-11-25 2010-05-27 Mobin Mohammad S Methods and apparatus for adapting one or more equalization parameters by reducing group delay spread
US20100290515A1 (en) * 2009-05-18 2010-11-18 Xingdong Dai Multi-Band Gain Adaptation for Receiver Equalization Using Approximate Frequency Separation
US20110311009A1 (en) * 2010-06-21 2011-12-22 Synopsys, Inc. Pattern agnostic on-die scope

Also Published As

Publication number Publication date
CN104052694B (en) 2018-03-27
US20140269890A1 (en) 2014-09-18
US20170214557A1 (en) 2017-07-27
US9847893B2 (en) 2017-12-19
US9379682B2 (en) 2016-06-28
EP2779550B1 (en) 2018-08-15
US9001943B2 (en) 2015-04-07
US20150207480A1 (en) 2015-07-23
CN104052694A (en) 2014-09-17
US9628304B2 (en) 2017-04-18
EP2779550A2 (en) 2014-09-17
US20160308694A1 (en) 2016-10-20

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